National Autonomous University of Mexico (UNAM)

1 ARTICLES PUBLISHED IN JoVE

Immunology and Infection

In Vitro Methods for Comparing Target Binding and CDC Induction Between Therapeutic Antibodies: Applications in Biosimilarity Analysis

Nohemi Salinas-Jazmín^1,2, Edith González-González¹, Luz X. Vásquez-Bochm³, Sonia M. Pérez-Tapia^4,5, Marco A. Velasco-Velázquez⁶

¹Unit for Development and Research in Bioprocesses Unit (UDIBI), National School of Biological Sciences, National Polytechnic Institute (IPN), University of Mexico (UNAM), ²School of Chemistry, National Autonomous University of Mexico (UNAM), ³Graduate Program in Chemical Sciences, National Autonomous University of Mexico (UNAM), ⁴Unit for Development Research and Medical Innovation in Biotechnology (UDIMEB), National School of Biological Sciences, National Polytechnic Institute (IPN), ⁵Department of Immunology, National Scool of Biological Sciences, National Polytechnic Institute (IPN), ⁶Department of Pharmacology and Unit of Translational Biomedicine (CMN 20 de noviembre), School of Medicine, National Autonomous University of Mexico (UNAM)

This protocol describes the in vitro comparison of two key functional characteristics of rituximab: target binding and complement-dependent cytotoxicity (CDC) induction. The methods were employed for a side-to-side comparison between reference rituximab and a rituximab biosimilar. These assays can be employed during biosimilar development or as a quality control in their production.